Examples
Frontend Use Cases
These use cases focus on the user interface (UI) and user experience (UX) interactions.
User Authentication
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Purpose: Allow users to sign up, log in, and manage sessions.
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Example:
- User enters credentials.
- The frontend validates form inputs.
- Displays success or error messages based on the response from the backend.
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UI Components:
- Login Form
- Signup Form
- Forgot Password
Dynamic Data Rendering
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Purpose: Display real-time or user-specific data.
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Example:
- Fetch user profile information and render it on the dashboard.
- Display product lists from a database.
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Techniques:
- Data fetching via REST or GraphQL APIs.
- Conditional rendering for loading states.
Form Management and Validation
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Purpose: Collect user data and validate it on the client side.
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Example:
- Multi-step form for onboarding.
- Real-time validation for email, password strength, etc.
Client-Side Caching
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Purpose: Improve performance by caching frequently used data.
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Example:
- Cache user preferences locally.
- Store session tokens in localStorage or cookies.
Interactive UI Components
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Purpose: Enhance user engagement with interactive elements.
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Example:
- Drag-and-drop file upload.
- Carousel for featured products.
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Libraries: React, Vue, Angular, Svelte.
Backend Use Cases
These use cases focus on data processing, API development, and business logic.
User Management and Role-Based Access
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Purpose: Handle user accounts and enforce access control.
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Example:
- Create, read, update, and delete (CRUD) user profiles.
- Assign roles (admin, user, moderator).
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Tech Stack: Node.js, Python (Django/Flask), PHP, Go.
Data Storage and Management
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Purpose: Manage structured and unstructured data.
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Example:
- Store user data in SQL or NoSQL databases.
- Create data models for ecommerce platforms.
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Tools: MongoDB, PostgreSQL, Redis, Elasticsearch.
API Development
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Purpose: Expose data and services to frontend or third-party clients.
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Example:
- REST APIs for mobile and web apps.
- GraphQL APIs for flexible data querying.
Scheduled Tasks and Cron Jobs
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Purpose: Automate repetitive tasks.
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Example:
- Nightly data backup.
- Email notifications for user activity summaries.
Security and Data Protection
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Purpose: Ensure data integrity and security.
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Example:
- Implement OAuth2 authentication.
- Encrypt sensitive data.
Backend to Frontend Use Cases
These use cases focus on how backend services provide data to the frontend.
Data Fetching and Rendering
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Purpose: Transfer data from backend to be displayed on the UI.
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Example:
- Fetch user orders and display them in a list.
- Show stock market data in real-time charts.
Real-Time Communication
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Purpose: Update frontend without a full-page refresh.
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Example:
- Chat applications using WebSockets.
- Notification systems (e.g., push notifications).
Server-Side Rendering (SSR)
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Purpose: Pre-render pages on the server for faster load times.
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Example:
- SEO-friendly pages for blogs and ecommerce.
- Faster initial load for single-page applications (SPAs).
Frontend to Backend Use Cases
These use cases focus on how the frontend interacts with the backend.
Form Submission and Data Posting
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Purpose: Send user data to the backend for processing.
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Example:
- Register a new user.
- Submit a contact form.
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HTTP Methods: POST, PUT, PATCH, DELETE.
File Uploads
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Purpose: Allow users to upload files to the server.
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Example:
- Upload profile pictures.
- Upload documents for verification.
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Best Practices: Handle large files with chunked uploads.
Event-Driven Updates
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Purpose: Trigger backend actions from user events.
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Example:
- Save progress in an online form when a user clicks "Save."
- Send analytics events to a backend service.
Authentication and Authorization
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Purpose: Securely access backend resources.
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Example:
- Send an access token with each request.
- Refresh tokens for long-lived sessions.
Full-Stack Use Cases
These use cases span across both frontend and backend.
Ecommerce Platform
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Frontend: Product catalog, cart management, checkout process.
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Backend: Inventory management, order processing, payment gateway integration.
Social Media Application
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Frontend: News feed, profile management, real-time chat.
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Backend: Content storage, user connections, notification service.
Content Management System (CMS)
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Frontend: Admin panel for managing content.
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Backend: Content storage, versioning, role management.